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Program to find simple interest
  • Last Updated : 22 May, 2018
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What is ‘Simple Interest’?
Simple interest is a quick method of calculating the interest charge on a loan. Simple interest is determined by multiplying the daily interest rate by the principal by the number of days that elapse between payments.
Simple Interest formula:

Simple interest formula is given by:
Simple Interest = (P x T x R)/100
Where,
P is the principle amount
T is the time and
R is the rate

Examples :

EXAMPLE1:
Input : P = 10000
        R = 5
        T = 5
Output :2500
We need to find simple interest on 
Rs. 10,000 at the rate of 5% for 5 
units of time.

EXAMPLE2:
Input : P = 3000
        R = 7
        T = 1
Output :210

The formula to calculate the simple interest is: simple_interest = (P * T * R) / 100 where P is principal amount, T is time & R is rate of interest.

C++






// CPP program to find simple interest for
// given principal amount, time and rate of
// interest.
#include<iostream>
using namespace std;
int main()
{
    // We can change values here for
    // different inputs
    float P = 1, R = 1, T = 1;
  
    /* Calculate simple interest */
    float SI = (P * T * R) / 100;
  
    /* Print the resultant value of SI */
    cout << "Simple Interest = " << SI;
  
    return 0;
}

Java




// A Simple JAVA program to compute 
// simple interest for given principal
// amount, time and rate of interest.
import java.io.*;
  
class GFG
{
    public static void main(String args[])
    {   
        // We can change values here for
        // different inputs
        float P = 1, R = 1, T = 1;
          
        /* Calculate simple interest */
        float SI = (P * T * R) / 100;
        System.out.println("Simple interest = "+ SI);
    }
}
  
// This code is contributed by Anant Agarwal.

Python3




# Python3 program to find simple interest
# for given principal amount, time and
# rate of interest.
  
# We can change values here for
# different inputs
P = 1 
R = 1 
T = 1 
  
# Calculates simple interest 
SI = (P * R * T) / 100
  
# Print the resultant value of SI 
print("simple interest is", SI)
   
# This code is contributed by Azkia Anam.

C#




// A Simple C# program to compute 
// simple interest for given principal
// amount, time and rate of interest.
using System;
  
class GFG {
      
    // Driver Code
    public static void Main()
    
          
        // We can change values here for
        // different inputs
        float P = 1, R = 1, T = 1;
          
        // Calculate simple interest 
        float SI = (P * T * R) / 100;
        Console.Write("Simple interest = "+ SI);
    }
}
  
// This code is contributed by Nitin Mittal.

PHP




<?php
// PHP program to find simple interest
// for given principal amount, time 
// and rate of interest.
  
// We can change values here for
// different inputs
$P = 1;
$R = 1;
$T = 1;
  
/* Calculate simple interest */
$SI = ($P * $T * $R) / 100;
  
/* Print the resultant value of SI */
echo "Simple Interest = ". $SI;
  
// This code is contributed by Sam007
?>


Output :
Simple Interest : 0.01

This article is contributed by Anurag Rawat. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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